Nope I don't think you can set shortcuts for it by default. But you can do it through maxscript.macroScript PPCentCategory:"VigTools"toolTip:"Pivot Point Center"buttontext:"PPCent"( toolMode.pivotCenter()) Copy and paste this script into a new maxscript, run it once Ctrl-E and then under Customize > Customize UI > Catagory…
macroScript UsePivotPointCentercategory:"Pivot Tools"buttonText:"Use Pivot Point Center"toolTip:"Use Pivot Point Center"( on execute do setCoordCenter #Local)macroScript UseSelectionCentercategory:"Pivot Tools"buttonText:"Use Selection Center"toolTip:"Use Selection Center"( on execute do setCoordCenter…